Strap for Day-Date 36 Platinum Diamonds / President / Paved

The Rolex Day-Date 36, reference 118346-0036, features lugs that are exactly 20 millimetres wide. This measurement is the standard for watches in the 36-40mm case diameter range and is compatible with the vast majority of aftermarket artisanal watch straps available. The lug width should be verified by measuring the distance between the two lugs at the narrowest point of the case—on the 118346-0036, this corresponds precisely to 20mm.

For a Day-Date 36 118346-0036 in platinum 950, the most suitable straps are: dark brown or black alligator (formal setting), shell cordovan with vegetable tanning (aesthetic dialogue with the platinum patina), Italian vegetable-tanned calf leather (understated elegance). Shell cordovan in particular develops a natural cognac patina over time, creating a sophisticated contrast with the platinised case. Avoid vivid colours; platinum does not forgive chromatic shortcuts and requires neutral or warm-natural colour partners.

Changing the strap on the Day-Date 36 118346-0036 requires simple tools: a spring bar remover (a 3-5 euro tool specific to this operation). Position the watch on a soft surface, insert the remover's tip into the small hole on the side of the lug, press gently outward to create space, and extract the spring bar. Repeat on the other side. The new strap slides directly into the previous position. Total time: 2-3 minutes. If you are not experienced, consult a Rolex service centre or a trusted watchmaker.

Yes. An aftermarket strap manufactured to 20mm lug width is fully compatible with the 118346-0036, and its installation carries no legal consequences. The original Rolex Oyster bracelet remains intact and you can keep it in the box to restore the original configuration at any time. Many collectors rotate straps to protect the Oyster bracelet from daily wear and to vary the seasonal aesthetic. Using an aftermarket strap does not invalidate your Rolex warranty provided the case has not been opened.

An artisanal leather strap subject to vegetable tanning (alligator, shell cordovan, calf) typically lasts 3-7 years with daily wear, depending on frequency of use, water and humidity exposure, and maintenance. High-quality European alligator straps often exceed 6-8 years thanks to fibre density. Shell cordovan is more resistant to moisture and can last 7-9 years or more. Italian vegetable-tanned calf maintains an average lifespan of 4-6 years. Regular maintenance (cleaning with a damp cloth, rapid drying, application of natural balms every 6-8 months) significantly extends the life of the strap. Casati Milano provides an 18-month warranty on all manufacturing defects.